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Diffstat (limited to 'modules/gdscript/gd_compiler.h')
-rw-r--r-- | modules/gdscript/gd_compiler.h | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/modules/gdscript/gd_compiler.h b/modules/gdscript/gd_compiler.h new file mode 100644 index 0000000000..cda221dab0 --- /dev/null +++ b/modules/gdscript/gd_compiler.h @@ -0,0 +1,181 @@ +/*************************************************************************/ +/* gd_compiler.h */ +/*************************************************************************/ +/* This file is part of: */ +/* GODOT ENGINE */ +/* http://www.godotengine.org */ +/*************************************************************************/ +/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur. */ +/* */ +/* Permission is hereby granted, free of charge, to any person obtaining */ +/* a copy of this software and associated documentation files (the */ +/* "Software"), to deal in the Software without restriction, including */ +/* without limitation the rights to use, copy, modify, merge, publish, */ +/* distribute, sublicense, and/or sell copies of the Software, and to */ +/* permit persons to whom the Software is furnished to do so, subject to */ +/* the following conditions: */ +/* */ +/* The above copyright notice and this permission notice shall be */ +/* included in all copies or substantial portions of the Software. */ +/* */ +/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */ +/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */ +/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/ +/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */ +/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */ +/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */ +/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ +/*************************************************************************/ +#ifndef GD_COMPILER_H +#define GD_COMPILER_H + +#include "gd_parser.h" +#include "gd_script.h" + + +class GDCompiler { + + const GDParser *parser; + struct CodeGen { + + + GDScript *script; + const GDParser::ClassNode *class_node; + const GDParser::FunctionNode *function_node; + + + bool debug_stack; + + + List< Map<StringName,int> > stack_id_stack; + Map<StringName,int> stack_identifiers; + + List<GDFunction::StackDebug> stack_debug; + List< Map<StringName,int> > block_identifier_stack; + Map<StringName,int> block_identifiers; + + + void add_stack_identifier(const StringName& p_id,int p_stackpos) { + + stack_identifiers[p_id]=p_stackpos; + if (debug_stack) { + + block_identifiers[p_id]=p_stackpos; + GDFunction::StackDebug sd; + sd.added=true; + sd.line=current_line; + sd.identifier=p_id; + sd.pos=p_stackpos; + stack_debug.push_back(sd); + } + } + + void push_stack_identifiers() { + + stack_id_stack.push_back( stack_identifiers ); + if (debug_stack) { + + block_identifier_stack.push_back(block_identifiers); + block_identifiers.clear(); + } + } + + void pop_stack_identifiers() { + + stack_identifiers = stack_id_stack.back()->get(); + stack_id_stack.pop_back(); + + if (debug_stack) { + for (Map<StringName,int>::Element *E=block_identifiers.front();E;E=E->next()) { + + GDFunction::StackDebug sd; + sd.added=false; + sd.identifier=E->key(); + sd.line=current_line; + sd.pos=E->get(); + stack_debug.push_back(sd); + } + block_identifiers=block_identifier_stack.back()->get(); + block_identifier_stack.pop_back(); + } + + } + + + // int get_identifier_pos(const StringName& p_dentifier) const; + HashMap<Variant,int,VariantHasher> constant_map; + Map<StringName,int> name_map; + + int get_name_map_pos(const StringName& p_identifier) { + + int ret; + if (!name_map.has(p_identifier)) { + ret=name_map.size(); + name_map[p_identifier]=ret; + } else { + ret=name_map[p_identifier]; + } + return ret; + } + + + + int get_constant_pos(const Variant& p_constant) { + + + if (constant_map.has(p_constant)) + return constant_map[p_constant]; + int pos = constant_map.size(); + constant_map[p_constant]=pos; + return pos; + } + + Vector<int> opcodes; + void alloc_stack(int p_level) { if (p_level >= stack_max) stack_max=p_level+1; } + void alloc_call(int p_params) { if (p_params >= call_max) call_max=p_params; } + + int current_line; + int stack_max; + int call_max; + }; + +#if 0 + void _create_index(const GDParser::OperatorNode *on); + void _create_call(const GDParser::OperatorNode *on); + + + int _parse_expression(const GDParser::Node *p_expr,CodeGen& codegen); + void _parse_block(GDParser::BlockNode *p_block); + void _parse_function(GDParser::FunctionNode *p_func); + Ref<GDScript> _parse_class(GDParser::ClassNode *p_class); +#endif + + void _set_error(const String& p_error,const GDParser::Node *p_node); + + bool _create_unary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level); + bool _create_binary_operator(CodeGen& codegen,const GDParser::OperatorNode *on,Variant::Operator op, int p_stack_level); + + //int _parse_subexpression(CodeGen& codegen,const GDParser::BlockNode *p_block,const GDParser::Node *p_expression); + int _parse_assign_right_expression(CodeGen& codegen,const GDParser::OperatorNode *p_expression, int p_stack_level); + int _parse_expression(CodeGen& codegen,const GDParser::Node *p_expression, int p_stack_level,bool p_root=false); + Error _parse_block(CodeGen& codegen,const GDParser::BlockNode *p_block,int p_stack_level=0,int p_break_addr=-1,int p_continue_addr=-1); + Error _parse_function(GDScript *p_script,const GDParser::ClassNode *p_class,const GDParser::FunctionNode *p_func); + Error _parse_class(GDScript *p_script,GDScript *p_owner,const GDParser::ClassNode *p_class); + int err_line; + int err_column; + StringName source; + String error; + +public: + + Error compile(const GDParser *p_parser,GDScript *p_script); + + String get_error() const; + int get_error_line() const; + int get_error_column() const; + + GDCompiler(); +}; + + +#endif // COMPILER_H |